pls tracing output for this programs and comment how get output

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Program4:

package javaapplication7;

/*package com.mkyong.test;

import java.security.MessageDigest;

/**

*

* @author Dr.Hossam Diab

*/

import java.security.MessageDigest;

public class JavaApplication7 {

public static void main(String[] args)throws Exception

{

String password = "1234*5689asdr000";

MessageDigest md = MessageDigest.getInstance("MD5");

md.update(password.getBytes());

byte byteData[] = md.digest();

//convert the byte to hex format method 1

StringBuffer sb = new StringBuffer();

for (int i = 0; i

sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));

}

System.out.println("Hex format : " + sb.toString());

//convert the byte to hex format method 2

StringBuffer hexString = new StringBuffer();

for (int i=0;i

String hex=Integer.toHexString(0xff & byteData[i]);

if(hex.length()==1) hexString.append('0');

hexString.append(hex);

}

System.out.println("Hex format : " + hexString.toString());

}

}

Program5:

package javaapplication8;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

import java.security.SecureRandom;

public class JavaApplication8 {

public static void main(String[] args) throws NoSuchAlgorithmException {

String passwordToHash = "password";

byte[] salt = getSalt();

String securePassword = get_SHA_1_SecurePassword(passwordToHash, salt);

System.out.println(securePassword);

}

private static String get_SHA_1_SecurePassword(String passwordToHash, byte[] salt)

{

String generatedPassword = null;

try {

MessageDigest md = MessageDigest.getInstance("SHA-1");

md.update(salt);

byte[] bytes = md.digest(passwordToHash.getBytes());

StringBuilder sb = new StringBuilder();

for(int i=0; i

{

sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));

}

generatedPassword = sb.toString();

}

catch (NoSuchAlgorithmException e)

{

e.printStackTrace();

}

return generatedPassword;

}

//Add salt

private static byte[] getSalt() throws NoSuchAlgorithmException

{

SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");

byte[] salt = new byte[16];

sr.nextBytes(salt);

return salt;

}

}

Program6:

package javaapplication9;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

import java.security.SecureRandom;

public class JavaApplication9 {

public static void main(String[] args) throws NoSuchAlgorithmException {

String passwordToHash = "password";

byte[] salt = getSalt();

String securePassword = get_SHA_1_SecurePassword(passwordToHash, salt);

System.out.println(securePassword);

securePassword = get_SHA_256_SecurePassword(passwordToHash, salt);

System.out.println(securePassword);

securePassword = get_SHA_384_SecurePassword(passwordToHash, salt);

System.out.println(securePassword);

securePassword = get_SHA_512_SecurePassword(passwordToHash, salt);

System.out.println(securePassword);

}

private static String get_SHA_1_SecurePassword(String passwordToHash, byte[] salt)

{

String generatedPassword = null;

try {

MessageDigest md = MessageDigest.getInstance("SHA-1");

md.update(salt);

byte[] bytes = md.digest(passwordToHash.getBytes());

StringBuilder sb = new StringBuilder();

for(int i=0; i

{

sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));

}

generatedPassword = sb.toString();

}

catch (NoSuchAlgorithmException e)

{

e.printStackTrace();

}

return generatedPassword;

}

private static String get_SHA_256_SecurePassword(String passwordToHash, byte[] salt)

{

String generatedPassword = null;

try {

MessageDigest md = MessageDigest.getInstance("SHA-256");

md.update(salt);

byte[] bytes = md.digest(passwordToHash.getBytes());

StringBuilder sb = new StringBuilder();

for(int i=0; i

{

sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));

}

generatedPassword = sb.toString();

}

catch (NoSuchAlgorithmException e)

{

e.printStackTrace();

}

return generatedPassword;

}

private static String get_SHA_384_SecurePassword(String passwordToHash, byte[] salt)

{

String generatedPassword = null;

try {

MessageDigest md = MessageDigest.getInstance("SHA-384");

md.update(salt);

byte[] bytes = md.digest(passwordToHash.getBytes());

StringBuilder sb = new StringBuilder();

for(int i=0; i

{

sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));

}

generatedPassword = sb.toString();

}

catch (NoSuchAlgorithmException e)

{

e.printStackTrace();

}

return generatedPassword;

}

private static String get_SHA_512_SecurePassword(String passwordToHash, byte[] salt)

{

String generatedPassword = null;

try {

MessageDigest md = MessageDigest.getInstance("SHA-512");

md.update(salt);

byte[] bytes = md.digest(passwordToHash.getBytes());

StringBuilder sb = new StringBuilder();

for(int i=0; i

{

sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));

}

generatedPassword = sb.toString();

}

catch (NoSuchAlgorithmException e)

{

e.printStackTrace();

}

return generatedPassword;

}

//Add salt

private static byte[] getSalt() throws NoSuchAlgorithmException

{

SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");

byte[] salt = new byte[16];

sr.nextBytes(salt);

return salt;

}

}

Output-JavaApplication1 (run) Hex format 768f151f011adac0213beac29cd34509 Hex format 768f151f011adac0213beac29cd34509 BUILD SUCCESSFUL (total time: 0 seconds) Output JavaApplication1 (run) 5c6da77025128416dE67b BUILD SUCCESSFUL (total time: 0 seconds) Output- JavaApplication1 (run) cbb29d8c2cd2aa3a8d787a613bed0418 e3518fla2330c1e06e76889cafd8d74058b93691eb1978ed 0013dd6d6f1c77bfbc420fbc4823f182cf93e4294ef99dbd38d4931201e9bb6a289d95b6b18d0 3 8 0 3 5 0 3 0 2 9c90a 9b5067bf9428b37924fbl5649238843427d20a391b468bb4dcd293d670e762a9150137066ff4efs6ad8512f586a678e5c2590b2408607b9357 BUILD SUCCESSFUL (total time: 1 second) d2dc1a48 98c56bd1cbb80777 d72b5bc0d47257